岩石流/热固耦合下损伤演化并行分析系统及初步应用

Parallel analysis system for computing damage evolution of rocks subjected to H/TM coupling processes and its primary application

实现了可用于计算岩体在渗流场(H)、温度场(T)及应力场(M)等多场耦合作用下损伤(D)演化并行分析系统。详细论述了整体实现方案、线性方程组求解器、并行通信优化策略及针对不同场问题的高效处理方法。对测试模型HM和TM计算表明,在启动合理数目处理器时程序具有最佳性能,近线性加速比,效率在82%以上,默认精度下一次耦合计算千万自由度模型稳定在200s。对三维水压致裂过程和温度载荷引起的材料表面裂纹现象进行了数值计算,结果很好地反映客观规律,展示出该系统的广阔应用前景。

The 3D parallel analysis system which is used to analyze damage （D） evolution of rocks subjec- ted to the hydraulic （H）, temperature （T） and mechanical （M） coupling processes has been developed. Some details about its implementation, linear equations solver, methodologies of parallel communication optimization, and efficient approaches for dealing with different physical fields are discussed. The re- sults of the test models for the HM and TM computing indicate that it is the best performance, nearly linear speedup, and more than 82% efficiency to start a reasonable number of processors in the system, moreover, the one step time-consuming for computing the coupled model of 10 million DOFs with default precision is about 200 s. The numerical simulation results of 3D hydraulic fracturing process and surface cracks of material caused by temperature load have been well reflected the objective laws. The broad application prospects of this system have been shown.